Signoes of oiste-half to thomas j



(No Model.) j

W. J. FISK & H. L. PHELPS.

ROTARY ENGINE. NO. 879,385. 8 Patented Mar. 18, 1888.

WITNESSES INXggTOR: 7

44M BY 41 g ATTORNEYS.

o valve-chest E.

NITED STATES PATENT Fries.

.VILLIS J. FISK AND HOMER L. PHELPS, OF LOOKWOOD, NEW YORK, AS-

SIGNORS OF ONE-HALF TO THOMAS J. SIMCOE, OF SAME PLACE.

ROTARY ENGINE.

SPECIFICATION forming part of Letters Patent No. 379,385, dated March 13, 1888.

Application tiled September 2, 1887. Serial No. 248,660. (No model.)

[ improved rotary engine, and Fig. 2 is a ve1= tical transverse section of the same.

Similar letters of reference indicate corresponding parts in both views.

The object of our invention is to provide a simple compact rotary engine specially designed to be driven by steam, water, or compressed air.

Our invention consists in the construction and arrangement of parts, as will be hereinafter fully described and claimed.

To the cylinder A are fitted the heads B B, bored eccentrically and chambered to receive the ends of the body a of the piston G,and provided with boxes D, formed of the upper part 2 2), cast integrally with the cylinder-head, and

the lower part, c, which is removable and adjustable. In the upper part of the cylinder are formed the supply-ports d d and the exhaust-port e, which communicate with the The ports (1 cl communicate with the cylinder A on opposite sides of the line of contact between the piston O and the lnner surface of the top of the cylinder.

The valve-chest E receives steam through 5 the valve F and containsa D -valve,G,mounted on a valve-rod, H, extending through astuffing-box, f, in the side of the valve-chest. The valve G is capable of covering the exhaustport 6 and one or the other of the ports (Z d,

0 leaving the remaining port,d or d,in communication with the valve-chest E.

The body a of the piston Ois mortised transversely to, receive the sliding abutment I, which is formed of three principal sections, g The central section, 9, is grooved in opposite edges to receive tongues 2', formed on the sections it h. The sections it h are each formed of two parts, j j, which are beveled at their inner overlapping ends to permit of longitudinal expansion of the sections.

To the chambers in the heads B B are fitted the ends of the body a of'the piston C, and in acircumferential groove in each end of the piston-body is fitted a packing-ring, 7a, which prevents the escape of steam through the journals of the piston. The rings are split to permitthem to expand and notched to receive lug-pins Z, projecting from the body of the piston.

When steam is admitted to the valve-chest E, it enters the port (I or d and exerts a pressure upon one or the other of the outer sections of the sliding abutment I, while the steam escapes from the opposite side of the piston through the cavity in the valve G and through the exhaust-port e. \Vhen it is desired to reverse the motion of the engine, the valve Gis moved so as to bring the port which before supplied steam to the cylinder into communication with the exhaust-port and to bring the port which before served as exhaust-port into communication with the valve-chest E.

The sections h h of the sliding abutment I are held in contact with the inner surface of the walls of the cylinder by steam pressure and by centrifugal action, and the parts j j of each outer section of the abutment are expanded longitudinally by the pressure of steam in thejoints between the two parts.

Having thus fully described ourinvention,

we claim as new and desire to secure by Letters Patent- 1. In a rotary engine, the combination,with the cylinder provided with the transverse valve-chest E, supply-ports cl d, exhaust-port e, and reversing-valve G, of the piston body a, provided with a transverse mortise, and the sliding abutment I, formed of the sections 9 h h, substantially as described.

2. In a rotary engine, the sliding abutment I, formed of a central section, 9, grooved in opposite edges, and lateral sections h h, fitted to the grooves of the central section, each di vided into two parts, j j, overlapping each other, as shown, substantially as described.

3. In a rotary engine, a sliding abutment comprising a central section, outer sections at 5. In a rotary engine, a cylinder head, 3, opposite sides thereof, and tongue-and-groove formed in a single piece with an upper jourconnections between adjacent sides of the said nal-box section, b, and having an inner concentral and outer sections, substantially as set centric recess, substantially as set forth. forth.

4. In a rotary engine, the c0n1bination,with \VILLIS J. FISK. the cylinder open at its ends. of the headsB HOMER L. PHELPS. B, formed with integral upper journalbox sections, b I), and separate lower sections, 0 c, bolted to said integral sections, substantially as set forth.

\Vitnesses:

D. G. HAGADORN, E. J. BINGHAM. 

